Rotary bolt



(No Model.)

4 SheetS-Sheet- 1.

J. M. CASE. ROTARY BOLT;

Patented Dec. 17, 1889.

N. PEYERS. Fhalo-Lilhigmpher. Warhingmn. n c.

7 4 Sheets-Sheet 2. J. M. CASE. ROTARY BOLT.

(No Model.)

Patented Dec. 17

FIG

N PETERS. Plwlo-Luhngmpher, Waihingwn, D. C.

(No Model.) 4 Sheets-Sheet s.

CASE.

- ROTARY BOLT.

No. 417,630. Patented Dec. 17, 1889.

N'QMQ'aeL I 4 Sheets'-Sheet 4.

J. M. CASE.

ROTARY BOLT. Dim-417,630. Patented Dec. 17-, 1889.

' FIG -v N. PETERS, mmmho nmr. Wuhingtwi. 0.04

UNITED STATES PATENT OFFICE.

JOHN M. CASE, OF

COLUMBUS, OHIO, ASSIGNOR TO THE CASE MANUFAC- TURING COMPANY, OF SAMEPLACE.

ROTARY BO LT.

SPECIFICATION forming part of Letters Patent No. 417,630, dated December17, 1889.

Application filed June 3, 1887. Serial No. 240.179. (No model.)

To all whom it may concern:

Be it known that I, JOHN M. CASE, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Rotary Bolts, of whichthe following is a full, clear, and exact description.

My present invention relates to that class of rotary bolts which areprovided interiorly with means for scooping up the material on theascending side, carrying itover the shaft, and again dropping it on thedescending side of the reel.

The invention consists in certain features of novelty hereinafterparticularly pointed out in the claims, being first fully described withreference to the accompanying drawings, in Which,

Figure I is a vertical transverse section of a bolt constructedaccording to my invention. Fig. II is a transverse section of a reelconstructed according to my invention, and in which the means forsupporting the hoops over which the cloth is stretched differ slightlyfrom those shown in Fig. I. Fig. III is a vertical longitudinal sectionof a bolt constructed according to my invention, and in which the meansshown respectively in Figs. I and II for supporting the hoops over whichthe cloth is stretched are both employed. Fig. IV is an elevation of oneof my improved spiders, differing from the spider shown in Fig. II onlyin that the rim or flange formed as hereinafter described is ofslightly-different shape. Fig. V is an elevation of one of myimprovedspiders, which differs from the spider shown in Fig. II only in that itis formed 'of a plurality of sections secured together instead of beingformed of an integral casting. Fig. V1 is an elevation of one of myimproved spiders, which difiers from the spider shown in Fig. I only inthat it has provision for scoops or buckets with curved instead ofstraight sides. Fig. VII is a detail view of a fragment of one of thehoops over which the bolting-cloth is stretched, showing its covering ofpile fabric or other soft material.

A represents the frame or casing within which the bolting-reel isjournaled; B B, cantboards onto which the material passing through thereel falls, and by which it is conveyed to the upper one of twoconveyer-troughs C C, within each of which troughs is situateda spiralconveyer D, the fioor of each trough being provided with numerouscut-off valves throughout its length for facilitating the separation ofthe material into the desired number of grades.

E is a cant-board situated beneath the tail end of the reel for catchingthe material tailing off and conducting it to a suitable conveyer orreceptacle.

F represents the shaft of the reel, which passes through aperturesformed through the opposite ends of the casing, andis journaled in boxessupported by bracket arms G, secured to the frame of the casing.

The aperture at the head of the machine is of sufficient area to leavean annular space around the shaft to admit the material to be treated,the material being conducted to the interior of the casing through apipe H,-having a horizontal portion concentric with the shaft F,and avertical portion, the back wall of which is perforated for the passageof the said shaft.

I represents a spiral conveyer secured to that portion of the shaftwhich is situated within the horizontal portion of the pipe H forfeeding the material into the bolt.

J represents a sheet or strip of canvas depending within the casing andresting upon the reel for the purpose of keeping its meshes free.

Thus far I havedescribed nothing novel,a description of these partsbeing given only.

for the purpose of conveying a thorough the characteristics of which area band or collar 0, preferably of polygonal form, for embracing theshaft F, to which it is secured by screws or other suitable means, andan open frame having crotches for receiving the troughs or buckets P,which are open in the direction in which they travel, whereby they scoopup the material on the ascending side of the reel, carry it over theshaft F, and again discharge it on the descending side of the reel. Iprefer to construct each of these troughs or buckets of two strips ofwood p and p, secured within the crotch so as to form a trough ofsubstantially V shape in crossection; but I desire to have it understoodthat I do not confine myself to this particular mode of constructingthem. They may be formed of iron or other material, orot one, two, ormore pieces, and of any shape in crosssection which shall be capable ofproducing the desired result-that is to say, the buckets ortroughs must,for the purpose of my present invention, be of such shape and sosituated with relation to each other and the axis of the reel that eachsuccessive bucket will scoop up the material on the ascending side ofthe reel and without spilling any unless the reel be overloaded, inwhich case each trough will deposit its surplus into the space betweenit and the preceding trough'or bucket just bcfore dumping and carry theproper amount OX'GT the reel-shaft and dump it at or slightly below apoint opposite horizontally to the reel-shaft onto the descending sideof the reel. \V hen dumped, the material will either fall directly ontothe surface of the reel or else onto the back of the next precedingbucket or trough. If the material strikes the back of the next precedingbucket or trough, it is deflected outward and onto the bolting-surfaceat the above-named desired point.

I am aware that these buckets or scoops have been arranged on the outersurface of an impervious drum secured to the reel-shaft concentricallywithin the reel; but this has many disadvantages and is not theequivalent of my invention.

I am also aware that buckets or troughs of various shapes incross-section have been arranged in circular series within bolts, andvariously supported without the use of an impervious drum, so as toleave open spaces between them, and do not claim such, broadly, as myinvention.

Heretofore the construction and arrangement of these buckets have beensuch that the material will spill or be discharged into the spacesbetween them, while one of the principal objects of my present inventionis to have the buckets or troughs arranged with open spaces between themfor the free circulation of air, and to so situate said buckets thatthey will not discharge the least bit of material unless the reelbecomes overloaded, in which case it is an advantage to have the surplusdischarged, as will appear below, through said spaces, the space inclosed within the circular series of troughs or buckets being employedas an exhaust-chamber, with which communicates the exhaustrair trunk K.The object of this arrangement is to cause a gentle current of airthrough the material as it is precipitated, whereby the light fluffyparticles (these being chiefly instrumental in choking up the meshes ofthe bolting-cloth) may be separated and drawn off from the goodmaterial.

In reels as heretofore constructed the material is not delivered in onecolumn opposite the center of the reel-shaft, but the buckets begin tospill oit gradually as the reel revol ves, dropping a large proportionof the material in the center of the reel, so that it does not get theaction of sliding down upon the descending side. \Vhat is not deliveredback of the buckets falls on top of the next bucket in advance, andgradually spills ott as the reel rotates, and in view of the fact thatthe reel and material are both descending in one direction there couldbe but a trifling action of the material upon the cloth, owing to thefact that without a momentum of the material delivered from a suitablebucket at one time it could not travel down the reel any faster than thereel itself traveled, and consequently the boltin g capacity would becorrespondingly decreased.

Myimproved buckets, mounted atthe angle described, deliver the stock ata point above one-half of the distance from the horizontal diameter tothe top of the reel and dump upon precisely the same principle as theelevator-bucket, which is known in practice to empty at once the wholevolume of material, instead of allowing it to drizzle oil." gradually orfall upon the bucket in advance, as in machines heretofore made. By thedischarge of the quantity of material as a whole from a pointconsiderably above the horizontal diameter it attains a speed greaterthan that of the descending side of the reel, and consequently slidesdown that side in a mann er calculated to produce the greatest amount ofbolting capacity,

Supporting buckets upon spiders is the only practical manner of buildinga reel, for the reason that sometimes the miller will place a largerquantity upon the reel than it can properly handle, and as one of themain objects in forming these buckets in sections, leaving a spacebetween them, is to permit the surplus material to drop down into thecenter of the reel, in cases where it is overloaded and the bucket takesup too much, the proper amount only will be precipitated against theboltingcloth and the choking of the same thereby prevented.

It has been found in practice that all round reels having a solid insidecenter get choked up, owing to the fact that there are times when asurplus of material is thrown upon the reel, more than will pass downtoward the tail, and as a result the reel fills up and becomes one solidmass of material. The same also will occur when by accident very greatlyincreased quantities of stock are temporarily thrown upon bolting-reels.The openings between the buckets prevent this choking taking place.

The proper point to deliver the material against the cloth is at orslightly below the 7 horizontal diameter of the reel, for if it isdelivered above the horizontal diameter it would rebound backward andskip for some distance before it would again reach the cloth, whichwould limit, instead of increase, the capacity of the bolt. I havearranged the buckets in my present invention in such a manner as todeliver the material at the above-named desired point, and this,together with the momentum the material receives from gravitation, arenovel features of vital importance, because the material thereby travelsdown the proper portion more rapidly than the reel revolves, and, beinginstantly taken up by the other side, is kept in 0011- stant activity onboth sides of the reel.

Although I state that the buckets are relieved of surplus of material,yet I desire it to be understood that ordinarily in practice the reel issupplied with the proper amount of material only to enable the bucketsto carry what they take up over beyond the shaft and deposit it at theproper point without spilling any of it. There are so many conditionsand circumstances upon which the accomplishment of this result dependsthat it is impossible to specify any one particular construction andarrangement of the buckets which is essential. The width of the innerside 19 of each of the buckets, its angle with relation to axis of theshaft, its proximity to the bucket immediately in front of it, thequantity of material which the outer side 1) scoops up, and the momentumof the reel are all factors which enter into the problem, and each maybe varied accordingly as the others bear one or another relation withrespect to it. It can therefore only be said, in general terms, thatthese parts should bear such relations to each other that no bucketshall commence to discharge until it has reached such a position thatits contents shall not fall into one of the spaces between its forwardedge and one of the buckets in advance of it.

In Figs. I, II, and V I have shown the front and rear sides of thebuckets of equal width and the buckets placed in such proximity to eachother that one-half the available space on the spiders will be taken upby the inner boards 13, open spaces of equal area being left between theadjacent cups for the passage of air. The angle of the outer boards 19should be such that they will not only scoop up the material on theascending side of the bolt, but will act as deflectors for throwing thematerial which falls on their backs on the descending side of the reeloutward instead of inward.

In Fig. IV I have shown the inner boards p of greater width than theouter boards 19, sot-hat they occupy more than one-half the availablespace on the spiders, the angles of both boards with relation to eachother and to the axis of the reel being different from Figs. 1, II, andV.

In Fig. VI I have shown a spider with crotches for receiving curvedinstead of flat. boards 13 p, so that the troughs when formed will be ofU shapein cross-section. Aminute description of this modification is notdeemed necessary, as I regard the troughs of U shape in cross-section inall respects the mere equivalents of those of V shape. The spiders Oconsist of inner collars 0, for embracing the reel-shaft, and anydesired number of spokes O, for supporting the outer rim, which has anydesired number of crotches 0 which latter are formed by the intersectionof branches 0 and 0 meeting at the angle which it is desired thatwalls 1) and p of the buckets shall bear to each other, the outer sides10 of the said buckets being secured to the branches O and the innersides 13 to the branches 0*, by screws or bolts, for the passage ofwhich said branches are perforated, as indicated in Fig. IV. Thebranches 0 constitute the outer rim.

In Figs. I, II, and V each of the branches 0 is shown as formed in twoplanes, all said branches being united end to end, so as to constitutein effect a polygonal rim with which the bases of the branches 0 unite,while in Fig. IV each of the branches 0 is shown as formed in a singleplane and extending from the base of one of the branches 0 forward tothe next branch 0 with the back part of which it unites some distancefrom the base. This arrangement is such that the branches 0 form bracesat the backs of the buckets for strengthening the branches 0 this beingthe preferred form of spider. For forming new reels it is preferred toform this spider of a single casting; but for reconstructing old reelsit is preferred to form it in sections and secure the sections togetherby bolts or other suitable means, as shown in Fig. V, for the reasonthat such a spider may be applied to the shaft without removing thelatter from its bearings.

In Figs. I and III I have shown the spider cast with arms 0 projectingradially from the rims or branches 0, to the extremities of which armsthe hoops M are secured. These arms may, however, be omitted, as it isintended to employbut two spiders (one at each end of the reel) and tosupport the hoops, which are preferably placed about eighteen IIO inchesapart, by means of braces Q, bolted 7 by screws, as shown in Fig. IV, orotherwise, one board effectually holds the other against fiexure,thereby constituting troughs or buckets of sufficient rigidity tosupport the hooks.

The usual longitudinal ribs or braces for sup porting them maybeentirely dispensed with. One end of each of these braces Q is formed atan angle, as shown in Fig. II, and perforated for the passage of thescrews, belts, or rivets by which the hoops are secured. The other endis also perforated for the passage of the bolts by which they aresecured to the troughs or buckets. but need not be bent, as they aredesigned to fit flat against the outer side 1) of the trough, as shown.

I have shown in the drawings a reel provided with only two spiders butin long reels this number may be increased, as may be found necessary,to gi re the reel the necessary lateral stability.

Having thus described my invention, the following is What I claim as newtherein and desire to secure by Letters Patent:

1. In a reel, the combination of the shaft, a pair of spiders situatedat the desired dis- 'tances apart and having arms 0 projectingtherefrom, the hoops secured to the extremities of said arms, the rigidlongitudinal troughs or buckets supported by said spiders, the bracessituated at suitable distances apart and projecting outward from saidbuckets, the hoops secured to the extremities of said braces, and thebolting-cloth stretched over said hoops, substantially as and for thepurpose set forth.

2. In a rotary bolt, a spider constructed of the inner collar, thespokes, and the outer rim having any desired number of crotches formedby the branches 0 and 0, said branches t)" forming braces at the backsof the branches substantially as set forth.

8. In a rotary bolt, a spider constructed of the polygonal inner collar0,the rad1al spokes O, the branches 0", constituting an outer rim, andthe short. branches 0', extending from said rim at an angle to thebranches 1), all of said parts being formed integrally, as set forth. w

4. In a rotary bolt, the combination of the spider formed with theerotches, the boards secured at an angle to each other in said crotchesand having their meeting edges secured together, whereby they are bothprevented from bending, and the braces Q, scoured to the boards andcarrying the hoops on which is stretched the boltingcloth, Whereby astiff support for said hoops is provided,

as explained. p

JOHN M. UAbE. Witnesses:

E. D. ANDERSON,

I. N. SIIOUGII.

